Yoshifumi Ujibashi

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The importance of database systems to efficiently support OLTP and OLAP mixed workloads, the so-called OLXP workloads, has been recognized recently. Some research projects and also some commercial database systems with focus on the processing of OLXP workloads have appeared in the last few years. In this paper, we present our work to extend the PostgreSQL(More)
Next generation sequencing (NGS) and the recent development of efficient algorithms for genomic analysis are contributing to the understanding of human genetic variation and thus to personalized medicine. Among those genomic analysis, disease-causal gene analysis that finds genes relevant to specific diseases has received much attention. In this paper, we(More)
PostgreSQL is a reliable and mature OSS RDBMS that has become widely utilized in enterprise systems recently. In order to meet the increasing performance requirements of such systems, PostgreSQL OSS Community enforced PostgreSQL version 9.4 parallel execution framework introducing the Dynamic Shared Memory and the Dynamic Background Workers. However, the(More)
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